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I'm not the best source of technical advice on this (and will count on someone more expert jumping in), but I know that our IPS will sometimes trap certain types of mail messages with subject lines or other header information that are too long (or something close to that explanation; blocking apparent buffer overflow exploits). This has been the reason that we've observed mail from the same source sometimes getting through and sometimes not on the same day. Another thing to check on. Adam McDougall writes: > You can also try to contact the postmaster for the source mail server. > postmaster@[thegovernorsdomain] should in theory be reviewed by a human, > and/or you could try making phone calls to track down an administrator > that should be able to check the logs to see if the expected sender did > indeed try to send a mail and what became of it from their point of view. > > If the mail did go through their mail server, they could tell you if an > attempt was made to contact a mail server at MSU, which one, what time, and > whether or not the mail server at MSU interacted in any manner up to claiming > to accept the mail for delivery. If the mail was "accepted for delivery", > they should be able to provide a mail ID supplied by the mail server at MSU > which could be cross referenced in the logs. > > On Tue, Jul 29, 2008 at 11:38:34AM -0400, Kim Geiger wrote: > > I wonder if anyone has any thoughts on a problem we experienced yesterday. > > Mail sent from the Governor's office never arrived. Um, yes, that's a little bit of a big deal.... > > And, as I write, another user informs me that a sender at the Michigan Public Service Commission got a nondeliverable bouncer from her mail server when she tried to mail here. I might be wrong, but I don't think the Gov.'s office got anything back at all. > > My mail server is running GroupWise 7.0.3. Logs show that quite a few other items from michigan.gov were received here yesterday, so it's not a matter of not accepting mail from that domain or anything. Nor was any of it trapped in our spam filter. > > Is it possible that the issue with the IPS yesterday afternoon stopped some mail at the campus border? It's hard to diagnose a non-delivery situation when nothing appears in my logs. I can provide relevant addresses/ip numbers if that would help turn up an event in another system log on campus. > > If you have other suggestions, I'd love to hear them. Thanks. > -- > > Kim Geiger > Information Technologist > Broadcasting Services > Michigan State University > 517-432-3120 x 429 > >